CN203513455U - Sludge drying and incineration system - Google Patents

Sludge drying and incineration system Download PDF

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Publication number
CN203513455U
CN203513455U CN201320625889.3U CN201320625889U CN203513455U CN 203513455 U CN203513455 U CN 203513455U CN 201320625889 U CN201320625889 U CN 201320625889U CN 203513455 U CN203513455 U CN 203513455U
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Prior art keywords
sludge
separator
incineration system
sludge drying
incineration
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CN201320625889.3U
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房永法
于丹
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HEBEI TAIZE ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co Ltd
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HEBEI TAIZE ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a sludge drying and incineration system, relating to the technical field of sludge treatment. The sludge drying and incineration system comprises a deep dehydration device, a sludge dryer, an incineration kiln, a secondary combustion settling chamber, a waste heat conducting oil furnace, a quenching heat exchanger, a separator, a deduster, a draught fan, a flue gas purification device and a dry residue storage chamber, wherein a heat conducting oil pipe is arranged between the waste heat conducting oil furnace and the sludge dryer. The sludge drying and incineration system utilizes waste heat generated by the incineration kiln to heat conduction oil, so as to dry the sludge by use of the heat conduction oil as a heating medium, the sludge can be reduced through drying incineration, the volume reduction capacity can reach more than 90%, the recycled residue soil can be transported outwards to be used as building materials for realizing secondary utilization, the remaining pollutants in the flue gas can be recycled by the flue gas purification device, and the exhaust gas emission can reach the environment-friendly requirement. The sludge drying and incineration system has the advantages of compact structure, reasonable process arrangement, energy conservation, consumption reduction and environment protection and completely utilizes heat value of the sludge to fully utilize the resource, thereby achieving innocent treatment of the sludge.

Description

A kind of sludge drying and incineration system
Technical field
The utility model relates to technical field of sludge treatment.
Background technology
Development along with Chinese society economy and city, the generation of municipal effluent constantly increases, on the purifying treatment definite meaning of sewage, say it is partly these separated from contaminants to be transferred in mud, so with respect to sewage, the approximate concentration of the pollutant component of mud is much higher.In recent years, country all actively supports from policy and financial resources, encourage comprehensive utilization of mud technological development, to keep water surrounding, prevent water pollution, promote the Sustainable development of national economy and ecotope, in August, 2013, State Council issues < < about accelerating development the suggestion > > (No. [ 2013 ] 30, promulgated by the State Council) of energy-conserving and environment-protective industry, wherein explicitly point out the developing direction that sludge treatment is disposed, require sludge treatment disposal costs must include cost of sewage disposal in, by subsidy, reward, the modes such as discount are encouraged Corporation R & D sludge reduction, innoxious, resource engineering chemistry technology and equipment.
Yet, most sewage works (at least 80%) are just by sludge garbage landfill, soil reuse or be directly exposed in wilderness simply, and make the degree of depth, do not dispose, because of the mishandling secondary pollution causing, still the entail dangers to present age and offspring's is healthy, so very urgent to the harmless treatment of mud.City sewage and sludge is processed and to be still global technical barrier, mishandlingly will cause secondary pollution, and the innocuity treatment problem of mud is increasingly serious.
Method for sludge treatment common are two kinds at present: the one, by the direct anhydration and incineration of mud, directly process high water content sludge (moisture more than 80%) without decrement process, facility investment is large, power consumption is high, and the hot blast burn producing directly with mud contact process carries a large amount of hazardous and noxious substances and is difficult to remove, and makes post-processing difficulty increasing; The 2nd, by after mechanical sludge dewatering, be processed into particle and mix cement Huo You power plant burning disposal, shortcoming be sludge disposal not thoroughly, need to coordinate operation with cement mill or power station, restricted by the player whose turn comes next.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of compact construction, process layout rationally, sludge drying and the incineration system of save energy.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of sludge drying and incineration system, comprise deep dehydrator, sludge dryer, incinerating kiln, two combustion settling pockets, rapid-cooling heat exchanger, separator, fly-ash separator, induced draft fan, smoke eliminator and dry slag bunker, described deep dehydrator, sludge dryer, incinerating kiln and two combustion settling pockets are communicated with successively, described rapid-cooling heat exchanger, separator, fly-ash separator, induced draft fan and smoke eliminator are communicated with successively, described two combustion settling pockets, separator, fly-ash separator is connected with dry slag bunker by transfer roller respectively, also comprise afterheat conduction oil stove, described afterheat conduction oil stove two ends are arranged between two combustion settling pockets and rapid-cooling heat exchanger, between described afterheat conduction oil stove and sludge dryer, be provided with heat-conducting oil pipes.
Preferably, described smoke eliminator comprises spray column, scavenging tower, circulating water channel, and described spray column is connected successively with scavenging tower, between described spray column, scavenging tower and circulating water channel, is equipped with water inlet pipe and water outlet pipe.
Preferably, described deep dehydrator model is XAZGFQDP800/2000-U pressure filter.
Preferably, described sludge dryer is JYS-80 blade dryer.
Preferably, described incinerating kiln is rotary type incinerating kiln.
Preferably, described separator is cyclonic separator.
Preferably, described fly-ash separator is sack cleaner.
The beneficial effect that adopts technique scheme to produce is: the waste-heat thermal oil that utilizes incinerating kiln to produce, and for the required energy of dewatered sludge, utilize thermal oil as thermal medium, to realize the mummification of mud, resource is fully used; Mud is minimizing after anhydration and incineration, subtracting capacity reaches more than 90%, dregs outward transport through reclaiming can also utilize recirculated water the residual contamination thing in flue gas can be reclaimed as material of construction second stage employ in smoke eliminator, makes exhaust emissions reach national environmental protection laws and regulations requirement.The utlity model has compact construction, reasonable, the energy-saving and cost-reducing advantage of process layout, make full use of the calorific value of mud, realize energy Efficient Cycle, the harmful organic substance in mud, germ and heavy metal can substantially be removed or transform after combination unit is processed, and realize the harmless treatment of mud.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-deep dehydrator, 2-sludge dryer, 3-incinerating kiln, 4-bis-combustion settling pockets, 5-rapid-cooling heat exchanger, 6-separator, 7-fly-ash separator, 8-induced draft fan, 9-smoke eliminator, the dry slag bunker of 10-, 11-afterheat conduction oil stove, 12-heat-conducting oil pipes, 13-spray column, 14-scavenging tower, 15-circulating water channel, 16-worm conveyor, 17-the first natural gas burner, 18-the second natural gas burner, 19-the first chain conveyor, 20-the second chain conveyor, 21-vertical elevator.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of sludge drying and incineration system as shown in Figure 1, comprise deep dehydrator 1, sludge dryer 2, incinerating kiln 3, two combustion settling pockets 4, rapid-cooling heat exchanger 5, separator 6, fly-ash separator 7, induced draft fan 8, smoke eliminator 9 and dry slag bunker 10, described deep dehydrator 1, sludge dryer 2, incinerating kiln 3 and two combustion settling pockets 4 are communicated with successively, described rapid-cooling heat exchanger 5, separator 6, fly-ash separator 7, induced draft fan 8 and smoke eliminator 9 are communicated with successively, described two combustion settling pockets 4, separator 6, fly-ash separator 7 is connected with dry slag bunker 10 by transfer roller respectively, also comprise afterheat conduction oil stove 11, described afterheat conduction oil stove 11 is arranged between two combustion settling pockets 4 and rapid-cooling heat exchanger 5, between described afterheat conduction oil stove 11 and sludge dryer 2, be provided with heat-conducting oil pipes 12.The waste-heat thermal oil that utilizes incinerating kiln 3 to produce, for the required energy of dewatered sludge, utilizes thermal oil as thermal medium, to realize the mummification of mud, resource is fully used, realizes power self-support, therefore, just when driving, need use external heat source, energy consumption is few.
Described smoke eliminator 9 comprises spray column 13, scavenging tower 14, circulating water channel 15, and described spray column 13 is connected successively with scavenging tower 14, between described spray column 13, scavenging tower 14 and circulating water channel 15, is equipped with water inlet pipe and water outlet pipe.Described deep dehydrator 1 model is XAZGFQDP800/2000-U pressure filter, and described sludge dryer 2 adopts JYS-80 blade dryer, and described incinerating kiln 3 is rotary type incinerating kiln, and described separator 6 is cyclonic separator, and described fly-ash separator 7 is sack cleaner.
The mud of municipal sewage plant, under usual condition, its water content is 80%, dry cement content is 20%.And added the materials such as coagulating agent before becoming mud, structure is agglomerating, and as further dewatered by ordinary method, difficulty is very big, the utility model adopts following sludge treatment technique:
(1) by XAZGFQDP800/2000-U pressure filter, utilize deeply dehydrating sludge technology (mud+additive), destroy after its original structure of mud, carry out press filtration again (plate and frame press filtration), make sludge moisture content drop to 60% by original 80%, overall decrement reaches more than 50%;
(2) (water content 60 % of the mud after deep dehydration, dry cement content 40 %, calorific value 1800kcal/kg, removing water returns in sewage work), by former mud 300t decrement to 150 t, and form solid state filter cake, through dehydration machine room, transmit (transportation) to installing low layer stockyard, district (storage capacity is 15 days);
(3) when device moves, filter cake is pushed and is entered in the hopper of worm conveyor 16 by scraper, through worm conveyor 16, promotes and enters blade dryer;
(4) filter cake enters blade dryer (model is: JYS-80, one 2 of covering devices) after, under the propelling movement of blade and the effect of chuck heating (thermal oil is from afterheat conduction oil stove 11), in machine, filter cake is dried gradually, moisture of filter cake is down to below 10% when exporting, and becomes dry mud; The water vapor discharging from filter cake is directly discharged by sludge dryer 2 top vapor pipes, enters spray column 13;
(5) dry mud freely falls in rotary type incinerating kiln 3 from the outlet of JYS-80 blade dryer, under the pulling of the rotation of kiln body and induced draft fan wind-force, in kiln, burns; The first natural gas burner 17 that in initial kiln, the heat energy of burning (ignition phase) is arranged by rotary kiln end is supplied with, burning is also supplied with by the set Adjustable air port of kiln hood with oxygen, until dry mud, normal in kiln, burn and for (kiln temperature 800-1000C °) after thermal equilibrium, can progressively close the first natural gas burner 17;
(6) dry mud forms dry slag (decrement is to 10% below of former mud) after burning, its more than 80% compared with coarse particles two combustions, below the interior sedimentation .20% of settling pocket 4 thinner slightly follow hot blast continuation lifting; Particle after sedimentation enters the second chain conveyor 20 through two combustions, settling pocket 4 bottom drain and through vertical elevator 21, delivers to dry slag bunker 10 again, to treat outward transport (can do cement filler or brickmaking etc.); For removing Dioxins (working condition is, more than temperature: 800C °, time: more than 2.5s), the second natural gas burner 18 that two combustions, the temperature of settling pocket 4 are arranged by bottom is given security;
(7) the 800C ° of above hot blast that incinerating kiln 3 produces enters afterheat conduction oil stove 11 through two combustions, settling pocket 4 top exhaust outlets, carries out conduction-oil warming and absorbs hot blast heat; The inlet temperature of afterheat conduction oil stove 11 (600C °-800C °) and stream (wind) amount are controlled by the main air valve He Bang road cold wind benefit air-valve that is arranged on two combustions, settling pocket 4 exhaust outlet tops and are jointly completed; Thermal oil (oil temperature supplying: 270C °) in oil pipe pipeline enters JYS-80 blade dryer chuck, filter cake is dried to (indirect type is dry), oil return (returning-oil temperature: 240C °) return to afterheat conduction oil stove 11 and carry out circulating-heating by high temperature circulation oil pump;
(8) hot blast is by after afterheat conduction oil stove 11, and its temperature, between 300C °-500C °, for preventing again producing Dioxins during falling temperature is slow, need be carried out hot blast cooling rapidly; Water/hot blast rapid-cooling heat exchanger 5 is set to reach chilling and heat absorption object; Rapid-cooling heat exchanger 5 use Li heart Re Shui Beng ﹑ hot well tanks circulate, and the hot water of generation (90C ° of left and right) can fully utilize;
(9) hot blast is by after water/hot blast rapid-cooling heat exchanger 5, and its temperature, between 100C °-130C °, enters cyclonic separator, again to remove dust (because still there being the particulate below 20% moving with the wind); The dust removing effects of cyclonic separator is in 90% left and right, and the particulate of removal enters the first chain conveyor 19 recycling natural-drops by bottom discharge mouth and enters two combustions, settling pocket 4 bottom the second chain conveyors 20, then enters dry slag bunker 10;
(10) fine particle of residue less than 2% follows hot blast to enter sack cleaner, further to remove dust; Sack cleaner dust removing effects is between 99%-99.9%, and the dust in system, by after sack cleaner, can reach qualified emission standard; At sack cleaner entrance end, activated carbon (powdery) access to plant is set, to remove some issuable objectionable impuritiess;
(11) motion that induced draft fan 8 is done in complete assembly pushes, variation by variable frequency control flow (processing power), induced draft fan 8 front units are all in negative pressure condition, induced draft fan 8 outlets arrange I and II spray column 13 and scavenging tower 14, can do according to the composition of former mud the processing such as desulfurization, deodorizing, dedusting;
(12) I and II spray column 13 and scavenging tower 14 are provided with tank and various pharmacy slot, I and II spray column and scavenging tower bottom (H=1200) arrange circulating water channel 15, every table apparatus Independent recycle pump (20 cubic meters/hour), off-side is established industrial tank, the public utilities such as wastewater trough.
The utlity model has following characteristics:
(1) adopt three-dimensional layout, compact construction, takes up an area few; Each cell processing ability and treatment time match, and are connected smooth and easy;
(2) focus on recycling economy:
Energy circulation: the hot blast that incinerating kiln 3 produces is used for heating thermal oil, thermal oil is for sludge drying, and dewatered sludge burns and produces hot blast, realizes power self-support, therefore, just when driving, need use external heat source, and energy consumption is few;
Dust circulation: the dust of taking away with flue gas falls after rise to settling pocket 4 through fly-ash separator 7;
Gas circulation: closed mud storehouse keeps micro-negative pressure, loose outward with anti-odour, the air of extraction is combustion-supporting with wind as incinerating kiln 3;
Water cycle; Scavenging tower 14 waters adopt recirculated water, row outside intermittence, and water quantity discharged is not higher than 2t/h;
(3) there is not back mixing, by Optimization Technology, reasonable wind distribution, exhaust emissions amount is few;
(4) adopt deep dehydration+mummification+afterheat conduction oil stove+burning combination unit (also can claim " mummification+burning integrating device "), having realized the energy makes full use of, sludge treatment is disposed thoroughly, flue gas, by the chilling processing of lowering the temperature, greatly reduces and has even eliminated the objectionable impurities in flue gas (being mainly Dioxins);
(5) safety features are comprehensive, and level of automation is high, reduced labour intensity, improved system efficiency.
The utlity model has following beneficial effect:
(1) minimizing: by deep dehydration decrement 50%, then through burning process, decrement can reach 90%;
(2) innoxious: the harmful organic substance in mud, germ and heavy metal can substantially be removed or transform after combination unit is processed
(3) resource utilization: this device can make full use of the calorific value of mud, realizes energy Efficient Cycle, and combustionresidue (accounting for primary sludge amount 10%) can be used as building auxiliary material and is effectively used.

Claims (7)

1. a sludge drying and incineration system, comprise deep dehydrator (1), sludge dryer (2), incinerating kiln (3), two combustion settling pockets (4), rapid-cooling heat exchanger (5), separator (6), fly-ash separator (7), induced draft fan (8), smoke eliminator (9) and dry slag bunker (10), described deep dehydrator (1), sludge dryer (2), incinerating kiln (3) and two combustion settling pockets (4) are communicated with successively, described rapid-cooling heat exchanger (5), separator (6), fly-ash separator (7), induced draft fan (8) and smoke eliminator (9) are communicated with successively, described two combustion settling pockets (4), separator (6), fly-ash separator (7) is connected with dry slag bunker (10) by transfer roller respectively, it is characterized in that: also comprise afterheat conduction oil stove (11), described afterheat conduction oil stove (11) is arranged between two combustion settling pockets (4) and rapid-cooling heat exchanger (5), between described afterheat conduction oil stove (11) and sludge dryer (2), be provided with heat-conducting oil pipes (12).
2. sludge drying according to claim 1 and incineration system, it is characterized in that: described smoke eliminator (9) comprises spray column (13), scavenging tower (14), circulating water channel (15), described spray column (13) is connected successively with scavenging tower (14), between described spray column (13), scavenging tower (14) and circulating water channel (15), is equipped with water inlet pipe and water outlet pipe.
3. sludge drying according to claim 1 and incineration system, is characterized in that: described deep dehydrator (1) model is XAZGFQDP800/2000-U pressure filter.
4. sludge drying according to claim 1 and incineration system, is characterized in that: described sludge dryer (2) adopts JYS-80 blade dryer.
5. sludge drying according to claim 1 and incineration system, is characterized in that: described incinerating kiln (3) is rotary type incinerating kiln.
6. sludge drying according to claim 1 and incineration system, is characterized in that: described separator (6) is cyclonic separator.
7. sludge drying according to claim 1 and incineration system, is characterized in that: described fly-ash separator (7) is sack cleaner.
CN201320625889.3U 2013-10-11 2013-10-11 Sludge drying and incineration system Expired - Fee Related CN203513455U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103992018A (en) * 2014-05-27 2014-08-20 广州市海森环境节能科技工程有限公司 Sludge drying system
CN104197339A (en) * 2014-09-11 2014-12-10 陆骏 Combined body of composite type rotating sludge incineration kiln and reciprocating type sludge incineration kiln
CN105090993A (en) * 2014-07-11 2015-11-25 浙江三联环保机械设备有限公司 Built-in comprehensive drying and incinerating system for sludge and drying and incinerating method for sludge
CN105621825A (en) * 2016-01-19 2016-06-01 上海第二工业大学 Sludge treatment device and method
CN106422703A (en) * 2016-10-26 2017-02-22 浙江环兴机械有限公司 Cooperative processing system for hazardous wastes and high-concentration salty waste water and method thereof
CN107417068A (en) * 2017-08-30 2017-12-01 杭州博雷环保科技有限公司 A kind of new sludge treatment technique
CN110845115A (en) * 2019-12-02 2020-02-28 上海市离心机械研究所有限公司 Municipal sludge dewatering mummification incineration disposal integration system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103992018A (en) * 2014-05-27 2014-08-20 广州市海森环境节能科技工程有限公司 Sludge drying system
CN103992018B (en) * 2014-05-27 2016-02-10 广州市海森环保科技股份有限公司 A kind of sludge drying system
CN105090993A (en) * 2014-07-11 2015-11-25 浙江三联环保机械设备有限公司 Built-in comprehensive drying and incinerating system for sludge and drying and incinerating method for sludge
CN105090993B (en) * 2014-07-11 2017-04-26 浙江三联环保科技股份有限公司 Built-in comprehensive drying and incinerating system for sludge and drying and incinerating method for sludge
CN104197339A (en) * 2014-09-11 2014-12-10 陆骏 Combined body of composite type rotating sludge incineration kiln and reciprocating type sludge incineration kiln
CN105621825A (en) * 2016-01-19 2016-06-01 上海第二工业大学 Sludge treatment device and method
CN105621825B (en) * 2016-01-19 2018-03-13 上海第二工业大学 A kind of sludge treatment equipment and method
CN106422703A (en) * 2016-10-26 2017-02-22 浙江环兴机械有限公司 Cooperative processing system for hazardous wastes and high-concentration salty waste water and method thereof
CN106422703B (en) * 2016-10-26 2022-09-20 浙江环兴机械有限公司 System and method for cooperatively treating hazardous waste and high-concentration salt-containing wastewater
CN107417068A (en) * 2017-08-30 2017-12-01 杭州博雷环保科技有限公司 A kind of new sludge treatment technique
CN110845115A (en) * 2019-12-02 2020-02-28 上海市离心机械研究所有限公司 Municipal sludge dewatering mummification incineration disposal integration system

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Granted publication date: 20140402